Digitised Radio Techniques for Fibre-Wireless Applications

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2014

Autores

Oliveira, JMB (Autor) Outra; L. M. Pessoa (Autor) FEUP; Coelho, D (Autor) Outra; Tavares, JS (Autor) Outra; H. M. Salgado (Autor) FEUP

Ata de Conferência Internacional

Título: 2014 16TH INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS (ICTON)

16th International Conference on Transparent Optical Networks (ICTON)

Graz, AUSTRIA, JUL 06-10, 2014

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 3 Citações

Outras Informações

ID Authenticus: P-00A-2XT

DOI: 10.1109/icton.2014.6876582

Abstract (EN): In this paper we present a comprehensive analysis and a performance assessment on the transmission of digitised RF signals over optical fibre (DRoF). Specifically, a study of the impact of the ADC/DAC quantization, jitter noise and the signal attenuation caused by the sub-sampling technique and DAC frequency roll-off are addressed by means of simulation, considering the transmission of RF signals conveying QAM symbols. Additionally, an experimental evaluation of DRoF links using vertical-cavity surface-emitting lasers (VCSEL) for different optical fibre attenuation levels is also conducted. Finally, a new paradigm of DRoF systems based on well-known sigma-delta modulators (SDM) is also presented. Results show that it is possible to digitally transmit signals through a digital optical-based network and to distribute them wirelessly at the receiver side without the need for local oscillators (LO) and/or frequency up-converters. Results also show that the new sigma-delta-over-fibre concept performs similarly to conventional DRoF schemes, whilst being more competitive for either upgrading installed systems as well as for new deployments.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4